MUNICH, GERMANY - OCTOBER 02: Arjen Robben of Bayern Muenchen runs past teammate Robert Lewandowski during the Group E match of the UEFA Champions League between FC Bayern Muenchen and Ajax at Allianz Arena on October 2, 2018 in Munich, Germany. (Photo by Sebastian Widmann/Bongarts/Getty Images)

Robert Lewandowski and Arjen Robben warned Bayern Munich they will have to retain 100% concentration to stand any chance of beating Liverpool in the Champions League.

The Bundesliga champions have been drawn to face Liverpool in the last-16 stage of the competition next month.

Following last season’s Champions League final appearance though, Liverpool have strengthed since then by making a number of key signings in last summer’s transfer window.

Due to this, Jurgen Klopp’s side lead the Premier League after 23 games with a four-point advantage over reigning champions Manchester City and reached the knockout stages of the Champions League from a group that contained Paris Saint-Germain and Napoli.

Therefore, Lewandowski will be keeping tabs on Liverpool over the next month.

“I think we played very well in the groups,” said Lewandowski, according to Fox Sports.

“Of course now we have very difficult opponents in Liverpool.

“At this moment they are top in the Premier League, we still have a few weeks, and I think what will be very important is how we feel one week before the game.

LIVERPOOL, ENGLAND - FEBRUARY 19: Robert Lewandowski of Bayern Munich tangles with Joel Matip and Jordan Henderson of Liverpool during the UEFA Champions League Round of 16 First Leg match between Liverpool and FC Bayern Muenchen at Anfield on February 19, 2019 in Liverpool, England. (Photo by Stu Forster/Getty Images)

Henderson believes Liverpool can hurt Bayern

The first leg of the UEFA Champions League Round of 16 series ended up 0-0 but Henderson believes his team can win at Allianz Arena.

“If we are ready, we are fit, then we are fighting and I hope we get through to the next round and of course this is our dream to beat Liverpool.

“We know it will be very difficult and from the first minute to the 90th we have to be 100 per cent focused.”

And former Chelsea star Robben warned Bayern that they have to be on top form to stand a chance of overcoming Liverpool at Anfield.

“It’s clear it’s going to be a difficult one and also very interesting,” he said.

“To play at Anfield is a very nice challenge, we should take it that way as well, in a positive way, going there with a lot of confidence.

“Of course we still have a few games to go before that game so we have to build up to try and get better and be at our best for a game like this.”

The first leg between Liverpool and Bayern will take place at Anfield on February 19 with the return leg at the Allianz Area set for March 13.